Calvin s



(No Model.) g

G. S. BALL. Jr.

SHUTTER 'FASTENER.

Patented Apr. 5,1887.

UNITED STATES PATENT ()FFICE.

CALVIN S. BALL, JR, OF SYRACUSE, NEV YORK.

SHUTTER-FASTEN ER.

SPECIFICATION forming part of Letters Patent No.360,406, dated April 5, 1887.

' Application filed August 17, 1885.

To all whom it may concern:

Be it known that I, CALVIN S. BALL, Jr., of the city of Syracuse, in the county of Onondaga and State of New York, a citizen of the United States, have invented certain new and useful Improvements in \Vindow-Blind Fastenings, of which the following is a specification, reference being had to the accompanying drawings, in which- Figure 1 is a perspective of the attachingframe; Fig. 2, an elevation of the bolt; Fig. 3, an elevation of catch; Fig. 4, an elevation of the complete device.

Like letters or figures of reference indicate like parts wherever they occur.

My obj ectis to produce an improved gravity fastening operating vertically and without any spring. It is constructed as follows:

My attaching and bolt-holding frame consists of two plates, A, having one side straight,

upon which I erect a flange or wall, 0, at right angles, and having the other side fiat and rounded out so as to. present an ornamental appearance and to receive the fasteningscrews. These plates are arranged with their straight sides and walls 0 parallel to each other, and the walls are connected by abar or bridge, I), thus creating an annular slot th rough the frame.

B is the sliding bolt, fitting loosely in the slot in the frame and consisting of a piece of metal provided with a wedging projecting point, (1, behind which is a depression or notch, 6, both being upon the lower end or bottom of the bolt. In the front edge of this bolt I make an elongated transverse groove, with a positive shoulder at each end of the groove, as shown in the drawings. This groove is somewhat longer than the vertical width of the bridge I). The upper end of this bolt is provided with an outwardly-projecting knob,

Serial No. 174,669. (No model.)

which is used to disengage the bolt from the catch by raising it vertically.

O is the catch to be fastened upon the window-sill, and consisting of a flanged base and an upright beveled lip, f.

\Vhen the frame is secured to the blind, the

bridge b, lying in thegroove in the bolt, and' the lip fas a blind is closed, and then the wedging of the point raises the bolt until the whole point clears the lip, when the bolt drops of its own gravity and the lip flies in the notch c. To disengage them or unlock a blind, I take hold of the knob and raise the 'bolt clear from the catch.

Unit I claim as my invention, and desire to secure by Letters Patent, is-

In a sln1tter=fastener, the combination of a frame consisting of plates A, provided with parallel walls and connected by the bridge Z), the bolt B, provided with point (2 and notch e at its lower end, a knob at its upper end, and an intermediate transverse groove terminating with regulatingshoulders, said bolt playing vertically behind the bridge 1) between the walls of the plates A, and a catch, 0, provided with lip f, substantially as' shown and de scribed.

CALVIN S. BALL, JR. \Vitnesscs: 1

W. E. Born, CHAS. M. FRY. 

